b0
b1
b2
b3
b4
h3
h2
h1
h0
Section area:
AB = (b0+b1)/2 x h0 + 
          (b1+b2)/2 x h1 +
          (b2+b3)/2 x h2 +
          (b3+b4)/2 x h3
Hull Analysis
Areas:  Computation